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JFraser

3 years ago

In order to H-bond, a molecule MUST HAVE a lone-pair of electrons on a central atom and be able to attract a neighboring hydrogen that itself is held with a very polar bond. You should draw some lewis structures

Lena772

3 years ago

CH3OH?

Abhisar

3 years ago

In order to form a H-bond you must have a hydrogen attached to a highly electronegative element (N, O and F)

More answers

Look up the options, which one do you think doesn't have a hydrogen attached to any of the electron hogs (highly EN elements; N, O, F)

arindameducationusc

3 years ago

I agree with @Abhisar
so, I guess it should be BH3 right guys?

Rushwr

3 years ago

H bonds are formed between a hydrogen atom and an electronegative atom.
F>O>N>Cl

Photon336

3 years ago

For hyrogen bonding to occur you need to have either F,O, or N covalently bonded to a hydrogen to act as the hydrogen bond donor, AND a lone pair of electrons to act as a hydrogen bond acceptor.

Photon336

3 years ago

|dw:1439841956985:dw||dw:1439842041594:dw| |dw:1439842098512:dw|

Photon336

3 years ago

We can see from these elements here, that in order to hydrogen bond there also must be a lone pair of electrons available to act as an acceptor as you see, so both requirements must be met for this to happen.

Photon336

3 years ago

Boron is electron deficient, so it has no lone pairs that can participate in H bonding with another BH3 molecule, and also it's not that highly of an electronegative element to do so anyway.
|dw:1439842257647:dw|
@lLena772

Photon336

3 years ago

@Lena772

arindameducationusc

3 years ago

nice one @Photon336

Photon336

3 years ago

Thanks @arindameducationusc the pictures are a little messy but hey i think I got the point across lol